CN101487630B - Heat-exchange intensification apparatus and method for indirect medium heating furnace - Google Patents
Heat-exchange intensification apparatus and method for indirect medium heating furnace Download PDFInfo
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- CN101487630B CN101487630B CN2009100783693A CN200910078369A CN101487630B CN 101487630 B CN101487630 B CN 101487630B CN 2009100783693 A CN2009100783693 A CN 2009100783693A CN 200910078369 A CN200910078369 A CN 200910078369A CN 101487630 B CN101487630 B CN 101487630B
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Abstract
The invention relates to an indirect medium heating furnace heat exchange intensifying device and a method thereof. The device comprises a fuel gas decoupling chamber, an air decoupling chamber, a starting sweeping blower, a thermal acoustic coupling pulsating inflamer, a pressure gauge or a vacuum meter, an exhaust device free from condensing gas, a rigid connecting piece, a coil pipe, a shell and an exhaust smoke pipe, wherein, the thermal acoustic coupling pulsating inflamer is composed of an air check valve, a fuel gas check valve, a fuel gas nozzle, a combustion chamber, a tail pipe and an exhaust decoupling chamber. The method includes: the combustion chamber and a smoke tube adopt a gas pulsation heat exchange mode and eradicates a smoke flow boundary layer in the chamber wall and a smoke tube wall, thus improving heat convection coefficient at the smoke gas side and reducing heat exchange area; the heat exchange between the indirect heat transmission medium (water) and the heated fluid coil plate adopts a stable dropwise condensation heat exchange way realized by mechanical vibration of the pipe coil, thus improving heat convection coefficient of the indirect heat transmission medium (water) and the heated fluid coil plate and reducing heat exchange area.
Description
(1) technical field
The present invention relates to a kind of indirect medium heating furnace heat exchange intensifying device and method, be mainly used in the oil field gathering and transportation engineering, also can be applied to field of boilers and other civilian heater.
(2) background technology
Crude oil, natural gas transport great majority adopt water jacket furnace; The characteristics of water jacket furnace are that indirect heat exchange medium-water is at first heated in the burning heat release; Then water again heat transferred under water be heated fluid, the benefit of doing like this is avoid flame directly the to add hot fluid fluid over-temp and over-pressure that is caused, the danger that flue gas corrosion is blasted.A kind of type of furnace that adopts indirect medium mode of heating of water jacket furnace; Its main heat exchange element is combustion chamber and smoke pipe, be heated the fluid coil pipe; These heat exchange elements all immerse in the water; Carry out exchange heat through water, concrete heat transfer process is following: fuel combustion is passed to combustion chamber and smoke pipe inwall through convection current and radiation with heat, and the process that heat is passed to outer wall by combustion chamber and smoke pipe inwall is heat conduction; Combustion chamber and smoke pipe outer wall are passed to heat transfer medium (water) with heat through convection current and radiation, and this is first link of conducting heat; Second link of conducting heat; Heat transfer medium (water) is passed to heat through heat transfer free convection and is heated fluid coil pipe outer wall; The process that heat is passed to inwall by the coil pipe outer wall is heat conduction, and the coil pipe inwall is passed to heat and is heated fluid through forced convection, accomplish whole diabatic process.
More than indirectly the medium diabatic process have two heat transfer stages directly to influence overall heat transfer efficient, and then influence the size of heat exchange area.
First heat transfer link is the heat convection of fume side in combustion chamber and the smoke pipe; Owing to have hot boundary-layer between flue gas and inside pipe wall face; Cause the convection transfer rate of fume side very little; For the liberated heat that will burn is all passed to heat transfer medium (water), certainly will to increase heat exchange area, promptly increase the quantity of combustion chamber and smoke pipe.Even adopt to improve measures such as flue gas flow rate, its convection transfer rate increase is also quite limited, increases flue gas flow rate in addition will adopt means such as forced-air blast and air inducing, causes reheat furnace system complicacy, extra consume electric power, fault rate high.
Second heat transfer link is heat transfer medium (water) and is heated the heat convection between the fluid coil pipe outer wall; Since in the body of heater heat transfer medium (water) only when heating because density contrast produces free convection; Therefore its convection transfer rate is very low, is heated the forced-convection heat transfer coefficient of fluid in the coil pipe, is heated fluid for the heat of heat transfer medium (water) is all passed to; Need enough heat exchange areas, promptly enough coil lengths.
Extensively adopt the phase-change heat-exchange technology to this link heat transfer problem; But these phase-change heat-exchange methods and technological means all belong to the film condensation heat transfer scope; Because dielectric gas is prone to form liquid film when the coil pipe outer wall condenses; The gasification latent heat that discharges when condensing has only through the liquid rete could carry out heat exchange with the coil pipe outside wall surface, and rete becomes the main thermal resistance of condensation heat transfer.Have only the liquid film layer of destruction to form dropwise condensation, steam is directly contacted with the coil pipe wall, could improve the coefficient of heat transfer.
Can find out by above analysis,, just can greatly reduce combustion chamber, smoke pipe, coil pipe quantity, reduce the heating furnace volume, reduce the heating furnace steel quantity consumption if improve the convection transfer rate in above two stages of conducting heat.The present invention is exactly the new method of being invented to above two heat transfer stages, and the heating furnace volume is dwindled, and steel quantity consumption reduces.
(3) summary of the invention
The object of the present invention is to provide a kind of indirect medium heating furnace heat exchange intensifying device and method.
A kind of indirect medium heating furnace heat exchange intensifying device of the present invention; Its technical scheme is: by combustion gas decoupling chamber, air decoupling chamber, startup purging motor, hot acoustical coupling pulsating combusting device, Pressure gauge or vacuum meter, fixed gas exhaust apparatus, rigid connector; Coil pipe, shell and smoke exhaust pipe are formed.Wherein, described hot acoustical coupling pulsating combusting device and coil pipe are installed in the shell, connect in shell through rigid connector between hot acoustical coupling pulsating combusting device and the coil pipe; Shell one end is installed air decoupling chamber, starts purging motor and communicates with air decoupling chamber, and be fixed on the shell, and combustion gas decoupling chamber is installed in the air decoupling chamber; The shell other end is installed smoke exhaust pipe, communicates with hot acoustical coupling pulsating combusting device; Pressure gauge or vacuum meter and fixed gas exhaust apparatus are installed in the highest point of shell, and communicate with shell.
A kind of indirect medium heating furnace heat exchange intensifying device; It is characterized in that: be by combustion gas decoupling chamber, air decoupling chamber, start purging motor, hot acoustical coupling pulsating combusting device, Pressure gauge or vacuum meter, fixed gas exhaust apparatus, rigid connector; Coil pipe, shell and smoke exhaust pipe are formed; This device adopts split-type structural; Shell is divided into upper and lower two cylindrical shells independently; Upper and lower cylindrical shell connects through many tubules; Hot acoustical coupling pulsating combusting device is installed in the lower shell is only produced steam and only make condensation heat transfer usefulness with installation coil pipe in, the upper shell, hot acoustical coupling pulsating combusting device is connected through rigid connector with coil pipe; Shell lower shell one end is installed air decoupling chamber, starts purging motor and communicates with air decoupling chamber, and be fixed on the shell lower shell, and combustion gas decoupling chamber is installed in the air decoupling chamber; The shell lower shell other end is installed smoke exhaust pipe, communicates with hot acoustical coupling pulsating combusting device; Pressure gauge or vacuum meter and fixed gas exhaust apparatus are installed in the highest point of shell upper shell, and communicate with shell.
Wherein, described hot acoustical coupling pulsating combusting device is made up of one or more air check valve, the one or more gas nozzles of one or more combustion gas check valves, combustion chamber, one or more thinner tail pipe and an exhaust decoupling chamber; The combustion gas check valve is installed in an end of combustion chamber, communicates with the combustion chamber; Gas nozzle is connected with the combustion gas check valve in the combustion chamber; Air check valve is installed in top of combustion chamber and communicates with the combustion chamber; The other end of combustion chamber links to each other with an end of tail pipe, and the two communicates; The other end of tail pipe connects exhaust decoupling chamber, and communicates with it.
Wherein, described tail pipe can be crooked arbitrarily as required.
Wherein, adopt hot acoustical coupling pulsating combusting device to replace traditional fire tube, smoke pipe in the shell, hot acoustical coupling pulsating combusting device is a burner, is again heat exchanger.
Wherein, adopt between described hot acoustical coupling pulsating combusting device and heat exchange coil to be rigidly connected, rigid connector places in the furnace shell.
Wherein, described heating furnace the top is equipped with the fixed gas exhaust apparatus.
The present invention relates to a kind of indirect medium heating furnace heat exchange intensifying method; Its technical scheme is that combustion system, fire tube and the smoke pipe system of the existing water jacket furnace of replacing replace with hot acoustical coupling pulsating combusting device; The pulse pneumatic of the certain frequency that hot acoustical coupling burning produces destroys hot boundary-layer in the combustion chamber; The convection transfer rate of fume side is improved nearly 10 times, and the therefore hot acoustical coupling pulsating combusting device burner that both acted as a fuel is again as high-efficiency heat exchanger; Burner, fire tube and three functions of components of smoke pipe of traditional heating stove are integrated, have saved the fire tube and the smoke pipe of traditional heating stove.Hot acoustical coupling pulsating combusting device mainly is made up of parts such as combustion chamber, air check valve, combustion gas check valve, nozzle, tail pipe, decoupling chamber, smoke exhaust pipes; Make inner acoustic characteristic of burner itself and fuel combustion exothermic character produce coupling through pulsation supply air and fuel; Form the inner vertical pulse pneumatic of low frequency of burner; Destroy the boundary-layer between combustion gas and the burner inner wall face, strengthen combustion gas side heat convection.
The present invention relates to a kind of indirect medium heating furnace heat exchange intensifying method; Its technical scheme is; Hot acoustical coupling pulsating combusting device is immersed in below the indirect medium liquid level in the drum; Coil pipe is positioned at the liquid level top, through the technical method of negative pressure or pressure phase transformation, makes to produce the phase-change heat-exchange that condenses between heated medium steam and coil pipe outer wall.For avoiding the formation that the coil pipe outer wall condenses liquid film in the phase-change heat-exchange process; Utilize hot acoustical coupling pulsating combusting device when producing pulse pneumatic, can cause the characteristics of itself mechanical oscillation, connecting through rigid structure between pulsating combusting device and the coil pipe; Make coil pipe produce the milli machine vibration; Cause the liquid film of coil pipe outer wall can not stable existence, the change film condensation heat transfer be dropwise condensation heat transfer, improves convection transfer rate; Practice shows, more than the 5-10 when the dropwise condensation heat transfer coefficient can reach film condensation times.Reduce coil pipe quantity and length, dwindle the heating furnace volume, reduce the heating furnace steel quantity consumption.
Wherein, adopt hot acoustical coupling intermittent combustion mode, the self-pulsating of flue gas stream in the burner improves the fume side convection transfer rate.
Wherein, the mechanical oscillation that hot acoustical coupling pulsating combusting device itself produces pass to coil pipe, make coil pipe produce the milli machine vibration.
Wherein, be not full of water in the stove, only fill part water, in the anhydrous upper space heat exchange coil is set, water is heated to seethe with excitement and produces steam, and the coil pipe wall heat exchange of steam and low temperature is condensed into water, with the working medium that flows in the heat transferred coil heat exchanger; Water after condensing continues to be heated vaporization, so moves in circles, and realizes condensation heat transfer.
The present invention relates to a kind of indirect medium heating furnace heat exchange intensifying method and device; Have following beneficial effect: advantages such as hot acoustical coupling intermittent combustion has the efficiency of combustion height, and pollutant emission is low, therefore adopt the present invention to replace traditional oil field heating furnace; Like phase change heating furnace, water jacket furnace, pressure-fired stove etc.; The thermal efficiency can increase substantially, and pollutant discharge amount reduces significantly, and energy-conservation low pollution effects is very obvious.Burner, fire tube, smoke pipe comprehensively are that parts, coil pipe quantity and length reduce in a large number; And the heat exchange element structure all adopts standard design, need not carry out any secondary operations, need not increase technological means such as enhanced heat exchange such as fin; Do not need other any auxiliary device (like air blast, air-introduced machine etc.) and chimney; The heating furnace volume reduces significantly, and unit power consumption steel material also reduces significantly, and manufacturing cost reduces greatly.In addition, the present invention is easy to realize Automatic Control, and is safe and reliable to operation.
(4) description of drawings
Fig. 1: heating furnace embodiment ().
Fig. 2: heating furnace embodiment () A-A profile.
Fig. 3: hot acoustical coupling pulsating combusting device structural representation.
Fig. 4: heating furnace embodiment (two).
Fig. 5: heating furnace embodiment (two) B-B profile.
Label declaration is following among the figure:
1 combustion gas decoupling chamber, 2 air valve decoupling chamber, 3 start purging motor, 4 hot acoustical coupling pulsating combusting devices, 5 Pressure gauges or vacuum meter; 6 fixed gas exhaust apparatus, 7 rigid connectors, 8 coil pipes, 9 shells; 10 smoke exhaust pipes, 11 combustion gas check valves, 12 air check valve, 13 gas nozzles; 14 combustion chambers, 15 tail pipes, 16 exhaust decoupling chamber, shell tube connector about in the of 17
(5) specific embodiment:
Below in conjunction with accompanying drawing and embodiment, technical scheme of the present invention is done further explanation.
Embodiments of the invention (one) be oil-field brine blind roaster frame for movement part like Fig. 1, shown in Figure 2, heat transferring medium is a water, is used for heating in crude oil or natural gas and fails outward, fuel is natural gas.Heating furnace by combustion gas decoupling chamber 1, air decoupling chamber 2, start purging motor 3, hot acoustical coupling pulsating combusting device 4, Pressure gauge or vacuum meter 5, fixed gas exhaust apparatus 6, rigid connector 7, coil pipe 8, shell 9 is formed with smoke exhaust pipe 10.
Annexation is following: hot acoustical coupling pulsating combusting device 4 is installed in the shell 9 with coil pipe 8, connects in shell 9 through rigid connector 7 between hot acoustical coupling pulsating combusting device 4 and the coil pipe 8.Shell 9 one ends are installed air decoupling chamber 2, start purging motor 3 and communicate with air decoupling chamber 2, and be fixed on the shell (9), and combustion gas decoupling chamber 1 is installed in the air decoupling chamber 2; Shell 9 other ends are installed smoke exhaust pipe 10, communicate with hot acoustical coupling pulsating combusting device 4.Pressure gauge or vacuum meter 5 and fixed gas exhaust apparatus 6 are installed in the highest point of shell 9, and communicate with shell.
Hot acoustical coupling pulsating combusting device 4 is as shown in Figure 3, is made up of combustion gas check valve 11, air check valve 12, gas nozzle 13, combustion chamber 14, tail pipe 15 and exhaust decoupling chamber 16.The combustion gas check valve is installed in an end of combustion chamber, communicates with the combustion chamber; Gas nozzle is connected with the combustion gas check valve in the combustion chamber; Air check valve is installed in top of combustion chamber and communicates with the combustion chamber; The other end of combustion chamber links to each other with an end of tail pipe, and the two communicates; The other end of tail pipe connects exhaust decoupling chamber, and communicates with it.
Heating furnace embodiment (one) course of work is following: combustion gas sprays into combustion chamber 13 through combustion gas check valve 11 by gas nozzle 11, and after being lighted, combustion chamber 14 pressure raise; Cause flue gas to flow out through many tail pipes 15, exhaust decoupling chamber 16, because combustion chamber 14 pressure are higher than combustion gas incoming-flow pressure and atmospheric pressure, combustion gas check valve 11 is closed with air check valve 12 simultaneously; Stop to infeed combustion gas and air, because the inertial flow of flue gas in tail pipe 15 causes the pressure in the combustion chamber to reduce; Be lower than combustion gas incoming-flow pressure and atmospheric pressure, combustion gas check valve 11 is opened with air check valve 12, and beginning infeeds combustion gas and air again; Lighted by the high-temperature flue gas in the combustion chamber 15 after combustion gas and the air blending; Repeat a course of work, such process repeats (frequency is 20-100Hz) 20-100 time each second, because the periodically pulsing of combustion chamber 15 internal pressures causes the pulsation of flue gas stream periodic longitudinal to flow out; Wash away combustion chamber, tail pipe, smoke exhaust pipe inwall; Destroy inwall flue gas boundary-layer, improve the convection transfer rate of fume side, meanwhile pulsating combusting device 4 itself also can produce the periodic mechanical vibration of same frequency.Because pulsating combusting device 4 is connected through rigid connector 7 with coil pipe 8, coil pipe 8 also can produce periodic milli machine vibration.
Hot acoustical coupling pulsating combusting device 4 is with the water in the heat transferred shell 9, and it is upwards mobile that water receives thermal evaporation to become water vapour, when running into the coil pipe 8 that flows through crude oil or natural gas; The coil pipe outside wall temperature is lower than steam temperature; Carry out condensation heat transfer between water vapour and the coil pipe 8, because the vibration of the milli machine of coil pipe 8 makes coil pipe 8 outer walls can't form the liquid film that steam condenses and forms; Therefore can only produce dropwise condensation heat transfer; Improved the convection transfer rate of coil pipe outer wall side widely, dropwise condensation heat transfer is with crude oil or natural gas in the heat transferred coil pipe 8, and condensate flows back to liquid level and continues to receive thermal evaporation; Water reciprocal evaporation and condensation above liquid level is accomplished whole diabatic process like this.
Crude oil or the requirement of natural gas heating-up temperature are depended in the selection of condensation heat transfer pressure condition; When crude oil or gas outlet heating-up temperature are lower than 100 ℃, can select the mode of negative pressure condensation heat transfer for use, negative pressure condensation heat transfer boiler belongs to normal-pressure boiler; Safe, low cost of manufacture.Concrete way is: close all valves on the shell 9, start the burner heating, interior crude oil of coil pipe this moment or natural gas stop to carry, when treating that the shell internal pressure reaches certain value; Open fixed gas exhaust apparatus 6, discharge the air in the shell 9, treat that air drains in the shell; Pressure is closed fixed gas exhaust apparatus 6 during near setting value, opens crude oil or natural gas in the coil pipe this moment; Saturated vapor is met the condensation cooling of cold back in the shell, and temperature in the shell is reduced in about 95 ℃, and this process is equivalent to a constant volume heat release temperature-fall period; According to the thermophysical property of water vapour, must cause the reduction of shell internal pressure, vacuum meter 5 registrations maintain within the scope.
When crude oil or gas outlet heating-up temperature are higher than 100 ℃, can select the mode of pressure condensation heat transfer for use.Concrete way is: close all valves on the shell 9, start the burner heating, interior crude oil of coil pipe this moment or natural gas stop to carry; When treating that the shell internal pressure reaches certain value, open fixed gas exhaust apparatus 6, discharge the air in the shell 9; Treat that air drains in the shell, pressure is closed fixed gas exhaust apparatus 6 during near setting value; Open crude oil or natural gas in the coil pipe this moment; Saturated vapor is met the condensation cooling of cold back in the shell, and temperature in the shell is reduced in about setting value, and Pressure gauge 5 registrations are kept within limits.
Embodiments of the invention (two) are like Fig. 3, shown in Figure 4; Heating furnace is by combustion gas decoupling chamber 1, air decoupling chamber 2, startup purging motor 3, hot acoustical coupling pulsating combusting device 4, Pressure gauge or vacuum meter 5, fixed gas exhaust apparatus 6, rigid connector 7; Coil pipe 8, shell 9 is formed with smoke exhaust pipe 10.Be with the main distinction of heating furnace embodiment (); Adopt split-type structural; Shell 9 is divided into upper and lower two cylindrical shells independently; Upper and lower cylindrical shell connects through many tubules, 4 of hot acoustical coupling pulsating combusting devices is installed in the lower shell is made to produce steam and make condensation heat transfer usefulness with 8 in coil pipe of installation in, the upper shell, and pulsating combusting device 4 is connected through rigid connector 7 with coil pipe (8).
The course of work of heating furnace embodiment (two) is following: hot acoustical coupling pulsating combusting device 4 is with the water in heat transferred shell 9 lower shells; Water receives thermal evaporation to become water vapour through shell tube connector 17 is upwards mobile up and down; When shell 9 upper shells ran into the coil pipe 8 that flows through crude oil or natural gas, the coil pipe outside wall temperature was lower than steam temperature, carried out condensation heat transfer between water vapour and the coil pipe 8; Because the milli machine of coil pipe 8 vibration; Make coil pipe 8 outer walls produce dropwise condensation heat transfer,, reach design temperature and carry out outer defeated crude oil or the natural gas in the heat transferred coil pipe 8.Condensate flows back to shell 9 lower shells through shell tube connector 17 up and down and continues to receive thermal evaporation, and water is accomplished whole diabatic process at reciprocal evaporation and condensation between lower shell on the shell 9 like this.
Shell 9 lower shells are only relevant with power among the heating furnace embodiment (two); And with the irrelevant standarized component of user's working medium rerum natura; Thereby only need the different demands that working medium heats to be designed, make special shell 9 upper shell heat exchangers according to the user; Shell 9 lower shells with standard are assembled into one again, can greatly reduce the design work amount, shorten manufacturing schedule.Because both separate, can make both volume-diminished simultaneously, have the advantage of good pressure-bearing safe running performance and convenient transportation.
The automatic control system of heating furnace can be carried out with mutually deserved code requirement according to the technological requirement of heating furnace itself with other requirement, is not described in detail at this.
Claims (10)
1. an indirect medium heating furnace heat exchange intensifying device is characterized in that: be made up of combustion gas decoupling chamber, air decoupling chamber, startup purging motor, hot acoustical coupling pulsating combusting device, Pressure gauge or vacuum meter, fixed gas exhaust apparatus, rigid connector, coil pipe, shell and smoke exhaust pipe; Wherein, described hot acoustical coupling pulsating combusting device and coil pipe are installed in the shell, connect in shell through rigid connector between hot acoustical coupling pulsating combusting device and the coil pipe; Shell one end is installed air decoupling chamber, starts purging motor and communicates with air decoupling chamber, and be fixed on the shell, and combustion gas decoupling chamber is installed in the air decoupling chamber; The shell other end is installed smoke exhaust pipe, communicates with hot acoustical coupling pulsating combusting device; Pressure gauge or vacuum meter and fixed gas exhaust apparatus are installed in the highest point of shell, and communicate with shell.
2. an indirect medium heating furnace heat exchange intensifying device is characterized in that: be made up of combustion gas decoupling chamber, air decoupling chamber, startup purging motor, hot acoustical coupling pulsating combusting device, Pressure gauge or vacuum meter, fixed gas exhaust apparatus, rigid connector, coil pipe, shell and smoke exhaust pipe; This device adopts split-type structural; Shell is divided into upper and lower two cylindrical shells independently; Upper and lower cylindrical shell connects through many tubules; Hot acoustical coupling pulsating combusting device is installed in the lower shell is only produced steam usefulness, coil pipe is installed in the upper shell is only made condensation heat transfer usefulness, hot acoustical coupling pulsating combusting device is connected through rigid connector with coil pipe; Shell lower shell one end is installed air decoupling chamber, starts purging motor and communicates with air decoupling chamber, and be fixed on the shell lower shell, and combustion gas decoupling chamber is installed in the air decoupling chamber; The shell lower shell other end is installed smoke exhaust pipe, communicates with hot acoustical coupling pulsating combusting device; Pressure gauge or vacuum meter and fixed gas exhaust apparatus are installed in the highest point of shell upper shell, and communicate with shell.
3. indirect medium heating furnace heat exchange intensifying device according to claim 1 and 2; It is characterized in that: described hot acoustical coupling pulsating combusting device, form by one or more air check valve, one or more combustion gas check valve, one or more gas nozzle, combustion chamber, one or more thinner tail pipe and an exhaust decoupling chamber; The combustion gas check valve is installed in an end of combustion chamber, communicates with the combustion chamber; Gas nozzle is connected with the combustion gas check valve in the combustion chamber; Air check valve is installed in top of combustion chamber and communicates with the combustion chamber; The other end of combustion chamber links to each other with an end of tail pipe, and the two communicates; The other end of tail pipe connects exhaust decoupling chamber, and communicates with it.
4. indirect medium heating furnace heat exchange intensifying device according to claim 3 is characterized in that: described tail pipe can be crooked arbitrarily as required.
5. indirect medium heating furnace heat exchange intensifying method; It is characterized in that: hot acoustical coupling pulsating combusting device is immersed in below the indirect medium liquid level in the shell; Coil pipe is positioned at the liquid level top; Through the technical method of negative pressure or pressure phase transformation, make to produce the phase-change heat-exchange that condenses between heated medium steam and coil pipe outer wall; For avoiding the formation that the coil pipe outer wall condenses liquid film in the phase-change heat-exchange process; Utilize hot acoustical coupling pulsating combusting device when producing pulse pneumatic, can cause the characteristics of itself mechanical oscillation, connecting through rigid structure between hot acoustical coupling pulsating combusting device and the coil pipe; Make coil pipe produce the milli machine vibration; Cause the liquid film of coil pipe outer wall can not stable existence, the change film condensation heat transfer be dropwise condensation heat transfer, improves convection transfer rate.
6. indirect medium heating furnace heat exchange intensifying method according to claim 5 is characterized in that: adopt hot acoustical coupling intermittent combustion mode, the self-pulsating of flue gas stream in the burner improves the fume side convection transfer rate.
7. indirect medium heating furnace heat exchange intensifying method according to claim 5 is characterized in that: the mechanical oscillation that hot acoustical coupling pulsating combusting device itself produces pass to coil pipe, make coil pipe produce the milli machine vibration.
8. indirect medium heating furnace heat exchange intensifying method according to claim 5; It is characterized in that: be not full of water in the stove, only fill part water, in the anhydrous upper space heat exchange coil is set; Water is heated to seethe with excitement and produces steam; The coil pipe wall heat exchange of steam and low temperature is condensed into water, with the working medium that flows in the heat transferred coil heat exchanger; Water after condensing continues to be heated vaporization, so moves in circles, and realizes condensation heat transfer.
9. according to claim 1 or 2 or 3 described indirect medium heating furnace heat exchange intensifying devices, it is characterized in that: adopt hot acoustical coupling pulsating combusting device to replace traditional fire tube, smoke pipe in the shell, hot acoustical coupling pulsating combusting device is a burner, is again heat exchanger.
10. according to claim 1 or 2 or 3 described indirect medium heating furnace heat exchange intensifying devices, it is characterized in that: adopt between described hot acoustical coupling pulsating combusting device and heat exchange coil to be rigidly connected, rigid connector places in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100783693A CN101487630B (en) | 2009-02-26 | 2009-02-26 | Heat-exchange intensification apparatus and method for indirect medium heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100783693A CN101487630B (en) | 2009-02-26 | 2009-02-26 | Heat-exchange intensification apparatus and method for indirect medium heating furnace |
Publications (2)
| Publication Number | Publication Date |
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| CN101487630A CN101487630A (en) | 2009-07-22 |
| CN101487630B true CN101487630B (en) | 2012-05-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102269539B (en) * | 2011-09-16 | 2012-12-12 | 上海理工大学 | Control method and device for dropwise condensation heat-transferring property of super-hydrophobic surface |
| CN102563737B (en) * | 2012-01-18 | 2014-07-23 | 张照华 | Open type steam-condensate circulating heating system |
| CN105114926B (en) * | 2015-09-15 | 2017-05-03 | 南京林业大学 | Steam generation device of soil steam sterilizer |
| CN108931150B (en) * | 2018-04-06 | 2023-10-24 | 四川创达新能科技有限公司 | Integrated heat exchange equipment in natural gas hydrogen production system |
| CN109269097B (en) * | 2018-10-21 | 2024-04-05 | 深圳智慧能源技术有限公司 | Pipeline gas heating system |
| CN113864754A (en) * | 2021-11-04 | 2021-12-31 | 北京京诚科林环保科技有限公司 | Pulse combustion superheated steam generator |
| CN114413475A (en) * | 2022-01-27 | 2022-04-29 | 松山湖材料实验室 | Oil field heating furnace and method for heating crude oil |
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| CN201463274U (en) * | 2009-02-26 | 2010-05-12 | 北京航空航天大学 | Heat exchange strengthening device for indirect medium heating furnace |
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| CN201463274U (en) * | 2009-02-26 | 2010-05-12 | 北京航空航天大学 | Heat exchange strengthening device for indirect medium heating furnace |
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